CVE-2021-47355

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.1% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-05-21 14:35Z2 YR AGO

Last updated

2026-05-11 13:53Z3 MO AGO

Reserved

2024-05-21

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-416Use After FreeVariant

Data version

5.2

Document digest

bc46da684a93a4b965301391ad76d8b8f9383c29acff97caec1de07a56aebfd6

• git.kernel.orghttps://git.kernel.org/stable/c/99779c9d9ffc7775da6f7fd8a7c93ac61657bed5
• git.kernel.orghttps://git.kernel.org/stable/c/4e2a0848ea2cab0716d46f85a8ccd5fa9a493e51
• git.kernel.orghttps://git.kernel.org/stable/c/c471569632654e57c83512e0fc1ba0dbb4544ad6
• git.kernel.orghttps://git.kernel.org/stable/c/a7a7b2848312cc4c3a42b6e42a8ab2e441857aba
• git.kernel.orghttps://git.kernel.org/stable/c/bdf5334250c69fabf555b7322c75249ea7d5f148
• git.kernel.orghttps://git.kernel.org/stable/c/a7f7c42e31157d1f0871d6a8e1a0b73a6b4ea785
• git.kernel.orghttps://git.kernel.org/stable/c/2f958b6f6ba0854b39be748d21dfe71e0fe6580f
• git.kernel.orghttps://git.kernel.org/stable/c/5b991df8881088448cb223e769e37cab8dd40706
• git.kernel.orghttps://git.kernel.org/stable/c/34e7434ba4e97f4b85c1423a59b2922ba7dff2ea